Double bevel type double-knit circular knitting machine

Description

BACKGROUND OF THE INVENTION

Field of the Invention:

[0001] The present invention relates to a circular knitting machine and more particularly, to a double bevel type double-knit circular knitting machine, which has an inner annular needle cylinder holder and an outer annular needle cylinder holder configured to show a 50°∼60° double bevel profile. Further, a sinker may be coupled to the inner needles or the outer needles of the double bevel type double-knit circular knitting machine to assist in holding down the knitted fabric, for enabling the double bevel type double-knit circular knitting machine to knit double knit fabrics as well as double-faced reversible fabrics and double-faced irregular shaped fabrics.

Description of the Related Art:

[0002] US/6/6 744 discloses a circular knitting machine according to the preamble of claim 1.

[0003] A conventional double knit circular knitting machine generally comprises a disc having a horizontal needle cylinder holder and a vertical needle cylinder holder, a plurality of sector-shaped horizontal cam adjustment members horizontally abutted against one another along the surface of the horizontal needle cylinder holder, a plurality of horizontal cam blocks respectively arranged at the bottom side of the sector-shaped horizontal cam adjustment members, a plurality of horizontal needles reciprocatable in a respective horizontal needle track in each of the horizontal cam blocks to perform a knitting process; a plurality of sector-shaped vertical cam adjustment members abutted against one another along the surface of the vertical needle cylinder holder, a plurality of vertical cam blocks respectively arranged at the bottom side of the sector-shaped vertical cam adjustment members, and a plurality of vertical needles reciprocatable in a respective vertical needle track in each of the vertical cam blocks to perform a knitting process. During reciprocating motion of the horizontal needles and the vertical needles, yarns feeding from a yarn feeder above the disc are knitted into a fabric.

[0004] The aforesaid conventional double knit circular knitting machine is still not satisfactory in function. Because the horizontal needles and the vertical needles are reciprocating in different directions during a knitting operation, the effect of force distribution may result in uneven loop lengths or escape of loops. The knitted fabric has low elasticity. Further, this design of double knit circular knitting machine is practical for knitting double-faced reversible fabrics, double-faced irregular shaped fabrics, or fine gauge fabrics (20G/inch or 24G/inch).

[0005] Therefore, it is desirable to provide a double knit circular knitting machine that eliminates the aforesaid drawbacks.

SUMMARY OF THE INVENTION

[0006] The present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide a double bevel type double-knit circular knitting machine that eliminates the drawbacks of the conventional double knit circular knitting machines. The object is met by the machine defined in claim 1. The dependent claims relate to preferred embodiments. The double bevel type double-knit circular knitting machine comprises an inner annular needle cylinder holder and an outer annular needle cylinder holder extending around the inner annular needle cylinder holder. The inner annular needle cylinder holder and the outer annular needle cylinder holder slope may in two reversed directions at a same sloping angle of 50°∼60° to show a double bevel profile. Further, a sinker may be coupled to the inner needles or the outer needles to assist in holding down the knitted fabric. Therefore, the double bevel type double-knit circular knitting machine is practical for knitting double knit fabrics as well as double-faced reversible fabrics and double-faced irregular shaped fabrics.

[0007] If the inner annular needle cylinder holder and the outer annular needle cylinder holder slope in two reversed directions at a same sloping angle to show a double bevel profile, the invention facilitates tuck and withdrawal operation of the needles to knit a fabric having better elasticity, evenness, tightness, and solidity.

[0008] Further, the sloping angle of the inner annular needle cylinder holder and the outer annular needle cylinder holder with respect to a horizontal plane formed by said disk-shaped assembly is at 50° to 60°, or preferably at 55°.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 

FIG. 1 is an elevational view of a disc of a double bevel type double-knit circular knitting machine in accordance with the present invention.

FIG. 2 is an enlarged view of a part of the double bevel type double-knit circular knitting machine in accordance with the present invention.

FIG. 3 is a sectional view of the inner annular needle holder and outer annular needle holder of the double bevel type double-knit circular knitting machine in accordance with the present invention.

FIGS. 4a∼4e are schematic drawings of the present invention, showing the moving flow of two needles during knitting.

FIGS. 5a∼5e are schematic drawings of the present invention, showing the moving flow of one outer needle and one sinker during knitting.

FIGS. 6a∼6e are schematic drawings of the present invention, showing the moving flow of one sinker and one inner needle during knitting.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0010] Referring to FIGS. 1∼3, a double bevel type double-knit circular knitting machine in accordance with the present invention is shown comprising a disk-shaped assembly 1. The disk-shaped assembly 1 comprises an inner annular needle cylinder holder 10, and an outer annular needle cylinder holder 20 around the inner annular needle cylinder holder 10. The inner annular needle cylinder holder 10 and the outer annular needle cylinder holder 20 slope in two reversed directions at a same sloping angle to show a double bevel profile. The sloping angle of the double bevel profile is at 50°∼60°, preferably 55°.

[0011] The inner annular needle cylinder holder 10 has adjoined on its inner side an inner base member 11. A plurality of sector-shaped inner cam adjustment members 12 are fixedly mounted on the top side of the inner base member 11 and abutted against one another along the inner surface of the inner annular needle cylinder holder 10. An inner cam block 13 is respectively provided at the bottom side of each sector-shaped inner cam adjustment member 12. Multiple inner needles 14 are arranged between the inner annular needle cylinder holder 10 and the inner cam blocks 13. The inner cam blocks 13 each have a predetermined needle track 131. The inner needles 14 are reciprocating in the needle tracks 131 of the inner cam blocks 13 to perform the knitting process.

[0012] The outer annular needle cylinder holder 20 has adjoined on its outer side an outer base member 21. A plurality of sector-shaped outer cam adjustment members 22 are fixedly mounted on the top side of the outer base member 21 and abutted against one another along the outer surface of the outer annular needle cylinder holder 20. An outer cam block 23 is respectively provided at the bottom side of each sector-shaped outer cam adjustment member 22. Multiple outer needles 24 are arranged between the inner annular needle cylinder holder 10 and the outer cam blocks 23. The outer cam blocks 23 each have a predetermined needle track 231. The outer needles 24 are reciprocating in the needle tracks 231 of the outer cam blocks 23 to perform the knitting process.

[0013] The inner annular needle cylinder holder 10 and the outer annular needle cylinder holder 20 are so arranged to show a double bevel profile, and therefore, the sector-shaped inner cam adjustment members 12 and the sector-shaped outer cam adjustment members 22 are arranged in a double bevel manner and sloping at, for example, 55°, the inner needles 14 and the outer needles 24 are also arranged in a double bevel manner and sloping at 55°.

[0014] Referring to FIGS. 1∼3, the sector-shaped inner cam adjustment members 12 and the sector-shaped outer cam adjustment member 22 are respectively affixed to the inner base member 11 and the outer base member 21 with screws 50. The inner annular needle cylinder holder 10 and the outer annular needle cylinder holder 20 are affixed to the machine base with screws 50.

[0015] Referring to FIGS. 4a∼4e, as stated above, the sector-shaped inner cam adjustment members 12 and the sector-shaped outer cam adjustment members 22 are arranged on the disc 1 in a double bevel manner and sloping at 55°, the inner needles 14 and the outer needles 24 are also arranged on the disc 1 in a double bevel manner and sloping at 55°. As stated above the inner needles 14 and the outer needles 24 are symmetrically disposed at two sides and kept at the same sloping angle. This double bevel arrangement facilitates tuck and withdrawal operation of the needles 14 and 24. When compared to conventional double-knit circular knitting machine, the double bevel type double-knit circular knitting machine of the present invention is more compact and light. Further, because the inner needles 14 and the outer needles 24 are respectively arranged in the sector-shaped inner and outer cam adjustment members 12 and 22 in a symmetrical relationship and kept at the same sloping angle, the ribbed structure of the knitted fabric has better elasticity, evenness, tightness, and solidity.

[0016] Referring to FIGS. 4a∼4e, during knitting, the inner needles 14 and the outer needles 24 are respectively reciprocating in the needle tracks 131 of the inner cam blocks 13 and the needle tracks 231 of the outer cam blocks 23 subject to a predetermined knitting pattern to knit yarns 31 from a yarn feeder 30 into a knitted fabric 32. Because the procedure of reciprocating the needles 14 and 24 in the needle tracks 131 and 231 of the cam blocks 13 and 23 to knit a knitted fabric 32 is of the known technique, no further detailed description in this regard is necessary.

[0017] Referring to FIGS. 5a∼5e, a sinker 40 may be coupled to a predetermined number of outer needles 24 so that the sinker 40 assists in holding down the knitted single knit fabric 33 during knitting.

[0018] Referring to FIGS. 6a∼6e, a sinker 40 may be coupled to a predetermined number of inner needles 14 so that the sinker 40 assists holding down the knitted single knit fabric 33 during knitting.

[0019] The application of the present invention eliminates the drawbacks of unequal loop lengths or escape of loops that are commonly seen in conventional double knit circular knitting machines, of the type having a horizontal needle dial and a vertical needle cylinder arranged at right angles, during a knitting action due to the effect of force distribution upon knitting stroke of the needles. Because the invention has the inner annular needle cylinder holder and the outer annular needle cylinder holder arranged in a double bevel manner at 50°∼60°, the inner needles and the outer needles are reciprocating at two sides at the same sloping angle during knitting. Therefore, the invention facilitates tuck and withdrawal operation of the needles to knit a fabric having better elasticity, evenness, tightness, and solidity.

[0020] Further, because the inner annular needle cylinder holder and the outer annular needle cylinder holder be arranged in a double bevel manner at 50°∼60°, the knitted fabric fall to the bottom side through the gap between the inner annular needle cylinder holder and the outer annular needle cylinder holder, eliminating the drawback of the conventional double knit circular knitting machines in which the sloping face of the vertically extending needle holder hinders curving of the knitted fabric. Further, sinkers may be used and coupled to the inner needles or the outer needles to assist in holding down the knitted fabric, keeping the knitted fabric smooth. Further, the double bevel type double-knit circular knitting machine is practical for knitting double-faced reversible fabrics or double-faced irregular shaped fabrics that are not achievable by conventional double knit circular knitting machines.

[0021] Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.

Claims

1. A double bevel type double-knit circular knitting machine, comprising:

a disk-shaped assembly (1) comprising an inner annular needle cylinder holder (10) and an outer annular needle cylinder holder (20) extending around said inner annular needle cylinder holder (10), said inner annular needle cylinder holder (10) and said outer annular needle cylinder holder (20) sloping downward in two reversed directions at a same sloping angle with respect to a horizontal plane formed by said disk-shaped assembly (1) to show a double bevel profile;

a plurality of inner cam blocks (13) each defining a respective needle track (131);

a plurality of inner needles (14) respectively arranged between said inner annular needle cylinder holder (10) and said inner cam blocks (13) and reciprocatable in the needle tracks (131) of said inner cam blocks (13) to perform a knitting process;

a plurality of outer cam blocks (23) each defining a respective needle track (231);

a plurality of outer needles (24) respectively arranged between said outer annular needle cylinder holder (20) and said outer cam blocks (23) and reciprocatable in the needle tracks (131) of said outer cam blocks (23) to perform a knitting process;

an inner base member (11) adjoined on an inner side of said inner annular needle cylinder holder (10); and

an outer base member (21) adjoined on an outer side of said outer annular needle cylinder holder (20),

characterised by:

a plurality of sector-shaped inner cam adjustment members (12) fixedly mounted on a top side of said inner base member (11) and abutted against one another along an inner surface of said inner annular needle cylinder holder (10), said inner cam blocks (13) being respectively provided at a bottom side of each of said sector-shaped inner cam adjustment members (12);

a plurality of sector-shaped outer cam adjustment members (22) fixedly mounted on a top side of said outer base member (21) and abutted against one another along an outer surface of said outer annular needle cylinder holder (20), said outer cam blocks (23) being respectively provided at a bottom side of each of said sector-shaped outer cam adjustment members (22); and

at least one sinker (40) coupled to said outer needles (24) or to said inner needles (14) for holding down the knitted fabric during knitting of a single knit fabric,

wherein the sloping angle of said inner annular needle cylinder holder (10) and said outer annular needle cylinder holder (20) is 50° to 60°.

2. The machine of claim 1, wherein said sector-shaped outer cam adjustment members (22) are fixedly fastened to the top side of said outer base member (21) with screws (50).

3. The machine of claim 1, wherein said sector-shaped inner cam adjustment members (12) are fixedly fastened to the top side of said inner base member (11) with screws (50).

4. The machine of claim 1, wherein said inner annular needle cylinder holder (10) and said outer annular needle cylinder holder (20) are fixedly fastened to a machine base with screws (50).

5. The machine of claim 1, wherein the sloping angle of said inner annular needle cylinder holder (10) and said outer annular needle cylinder holder (20) is 55°.

Ansprüche

1. Doppelschrägflächen-Doppelgestrick-Rundstrickmaschine mit
einer scheibenförmigen Anordnung (1), die einen inneren ringförmigen Nadelzylinderhalter (10) und einen äußeren ringförmigen Nadelzylinderhalter (20) aufweist, der sich um den inneren ringförmigen Nadelzylinderhalter (10) herum erstreckt, wobei der innere ringförmige Nadelzylinderhalter (10) und der äußere ringförmige Nadelzylinderhalter (20) abwärts in zwei umgekehrte Richtungen in einem gleichen Neigungswinkel zu einer horizontalen, durch die scheibenförmige Anordnung (1) gebildeten Ebene geneigt sind, um ein Doppelschrägflächenprofil zu zeigen;
mehreren inneren Nockenblöcken (13), die jeweils eine entsprechende Nadelbahn (131) definieren;
mehreren inneren Nadeln (14), die jeweils zwischen dem inneren ringförmigen Nadelzylinderhalter (10) und den inneren Nockenblöcken (13) angeordnet und in den Nadelbahnen (131) der inneren Nockenblöcke (13) hin- und herbewegbar sind, um einen Strickvorgang durchzuführen;
mehreren äußeren Nockenblöcken (23), die jeweils eine entsprechende Nadelbahn (231) definieren;
mehreren äußeren Nadeln (24), die jeweils zwischen dem äußeren ringförmigen Nadelzylinderhalter (20) und den äußeren Nockenblöcken (23) angeordnet und in den Nadelbahnen (231) der äußeren Nockenblöcke (23) hin- und herbewegbar sind, um einen Strickvorgang durchzuführen;
einem inneren Basiselement (11), das an einer Innenseite des inneren ringförmigen Nadelzylinderhalters (10) angrenzt; und
einem äußeres Basiselement (21), das an einer Außenseite des äußeren ringförmigen Nadelzylinderhalters (20) angrenzt,
gekennzeichnet durch:

mehrere sektorförmige innere Nockenverstellelemente (12), die fest auf einer Oberseite des inneren Basiselements (11) montiert sind und entlang einer Innenfläche des inneren ringförmigen Nadelzylinderhalters (10) aneinander anstoßen, wobei die inneren Nockenblöcke (13) jeweils an einer Unterseite von jedem der sektorförmigen inneren Nockenverstellelemente (12) vorgesehen sind;

mehrere sektorförmige äußere Nockenverstellelemente (22), die fest auf einer Oberseite des äußeren Basiselements (21) montiert sind und entlang einer Außenfläche des äußeren ringförmigen Nadelzylinderhalters (20) aneinander anstoßen, wobei die äußeren Nockenblöcke (23) jeweils an einer Unterseite von jedem der sektorförmigen äußeren Nockenverstellelemente (22) vorgesehen sind; und

wenigstens eine Platine (40), die an die äußeren Nadeln (24) oder die inneren Nadeln (12) gekoppelt ist, um die Wirkware während des Strickens eines einzelnen Gestricks nach unten zu halten,

wobei der Neigungswinkel des inneren ringförmigen Nadelzylinderhalters (10) und des äußeren ringförmigen Nadelzylinderhalters (20) 50° bis 60° beträgt.

2. Maschine nach Anspruch 1, wobei die sektorförmigen äußeren Nockenverstellelemente (22) mit Schrauben (50) fest an der Oberseite des äußeren Basiselements (21) befestigt sind.

3. Maschine nach Anspruch 1, wobei die sektorförmigen inneren Nockenverstellelemente (12) mit Schrauben (50) fest an der Oberseite des inneren Basiselements (11) befestigt sind.

4. Maschine nach Anspruch 1, wobei der innere ringförmige Nadelzylinderhalter (10) und der äußere ringförmige Nadelzylinderhalter (20) mit Schrauben (50) fest an einer Maschinenbasis befestigt sind.

5. Maschine nach Anspruch 1, wobei der Neigungswinkel des inneren ringförmigen Nadelzylinderhalters (10) und des äußeren ringförmigen Nadelzylinderhalters (20) 55° beträgt.

Revendications

1. Machine à tricoter circulaire pour tricot double du type à fontures inclinées, comprenant:

un ensemble en forme de disque (1) comprenant un support de cylindre à aiguilles annulaire intérieur (10) et un support de cylindre à aiguilles annulaire extérieur (20) qui s'étend autour dudit support de cylindre à aiguilles annulaire intérieur (10), ledit support de cylindre à aiguilles annulaire intérieur (10) et ledit support de cylindre à aiguilles annulaire extérieur (20) étant inclinés vers le bas dans deux directions inverses avec un même angle d'inclinaison par rapport à un plan horizontal formé par ledit ensemble en forme de disque (1) afin de présenter un profil à fontures inclinées;

une pluralité de blocs de came intérieurs (13) qui définissent chacun un passage d'aiguille respectif (131);

une pluralité d'aiguilles intérieures (14) agencées respectivement entre ledit support de cylindre à aiguilles annulaire intérieur (10) et lesdits blocs de came intérieurs (13) et pouvant exécuter un déplacement va-et-vient dans les passages d'aiguilles (131) desdits blocs de came intérieurs (13) afin d'exécuter une opération de tricotage;

une pluralité de blocs de came extérieurs (23) qui définissent chacun un passage d'aiguille respectif (231);

une pluralité d'aiguilles extérieures (24) agencées respectivement entre ledit support de cylindre à aiguilles annulaire extérieur (20) et lesdits blocs de came extérieurs (23) et pouvant exécuter un déplacement va-et-vient dans les passages d'aiguilles (131) desdits blocs de came extérieurs (23) afin d'exécuter une opération de tricotage;

un élément de base intérieur (11) contigu à un côté intérieur dudit support de cylindre à aiguilles annulaire intérieur (10); et

un élément de base extérieur (21) contigu à un côté extérieur dudit support de cylindre à aiguilles annulaire extérieur (20),

caractérisée par:

une pluralité d'éléments de réglage de came intérieurs en forme de secteur (12) montés fixement sur un côté supérieur dudit élément de base intérieur (11) et butant les uns contre les autres le long d'une surface intérieure dudit support de cylindre à aiguilles annulaire intérieur (10), lesdits blocs de came intérieurs (13) étant respectivement prévus sur un côté inférieur de chacun desdits éléments de réglage de came intérieurs en forme de secteur (12);

une pluralité d'éléments de réglage de came extérieurs en forme de secteur (22) montés fixement sur un côté supérieur dudit élément de base extérieur (21) et butant les uns contre les autres le long d'une surface extérieure dudit support de cylindre à aiguilles annulaire extérieur (20), lesdits blocs de came extérieurs (23) étant respectivement prévus sur un côté inférieur de chacun desdits éléments de réglage de came extérieurs en forme de secteur (22); et

au moins une platine (40) couplée auxdites aiguilles extérieures (24) ou auxdites aiguilles intérieures (14) afin de maintenir à plat le tissu tricoté pendant le tricotage d'un seul tricot,

dans laquelle l'angle d'inclinaison dudit support de cylindre à aiguilles annulaire intérieur (10) et dudit support de cylindre à aiguilles annulaire extérieur (20) est compris entre 50° et 60°.

2. Machine selon la revendication 1, dans laquelle lesdits éléments de réglage de came extérieurs en forme de secteur (22) sont attachés fixement au côté supérieur dudit élément de base extérieur (21) à l'aide de vis (50) .

3. Machine selon la revendication 1, dans laquelle lesdits éléments de réglage de came intérieurs en forme de secteur (12) sont attachés fixement au côté supérieur dudit élément de base intérieur (11) à l'aide de vis (50) .

4. Machine selon la revendication 1, dans laquelle ledit support de cylindre à aiguilles annulaire intérieur (10) et ledit support de cylindre à aiguilles annulaire extérieur (20) sont attachés fixement à une base de machine à l'aide de vis (50).

5. Machine selon la revendication 1, dans laquelle l'angle d'inclinaison dudit support de cylindre à aiguilles annulaire intérieur (10) et dudit support de cylindre à aiguilles annulaire extérieur (20) est égal à 55°.

Drawing